铁锰重金属胁迫对黑芸苔幼苗生化的影响

Uma Chaurasiya, R. K. Agnihotri, Rajendra K. Sharma
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引用次数: 0

摘要

以黑芸苔(Brassica nigra,品种1021)种子为材料,研究了铁和锰对其不同生化指标的影响。在50 μM、100 μM和200 μM浓度下,研究了Fe和Mn对黑芥菜幼苗色素组成(脯氨酸和碳水化合物含量)的影响。与对照相比,这些浓度显著影响了受试幼苗的生长。叶绿素和碳水化合物含量在较低铁和锰浓度下也有所增加。然而,在营养培养基中以Ca(NO3)2的形式额外提供5 mM氮以某种方式降低了这些金属的作用。在氮处理中,各浓度(50 μM、100 μM和200 μM) Fe对叶绿素、类胡萝卜素和碳水化合物含量的促进作用均较强。而Mn在50 μM浓度下增加了叶绿素a、类胡萝卜素和碳水化合物含量,在100 μM和200 μM浓度下显著降低;叶绿素' b '和脯氨酸含量在所有Mn浓度下均下降。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Biochemical Changes in Seedlings of Brassica nigra Imposed by Iron and Manganese Induced Heavy Metals Stress
In present study, the seeds of Brassica nigra (variety 1021) were used to evaluate the effect of iron and manganese on different biochemical parameters. The effects of Fe and Mn were studied with regard to pigments composition (proline and carbohydrates contents) of black mustard seedlings under 50 μM, 100 μM and 200 μM concentrations. These concentrations significantly affected the growth of tested seedlings compared to control. Chlorophylls and carbohydrate content also increased at the lower concentrations of Fe and Mn. However, the additional supply of the 5 mM nitrogen in the form of Ca(NO3)2 in the nutrient medium somehow reduced the effect of these metals. On the application of nitrogen in the nutrient medium, Fe showed more promotary effect on chlorophylls, carotenoid and carbohydrates content in all concentrations (50 μM, 100 μM and 200 μM). Whereas, Mn exhibited increase in chlorophyll ‘a ’, carotenoid and carbohydrate content at 50 μM concentration but these contents significantly decreased at 100 μM and 200 μM concentrations, respectively; while chlorophyll ‘b ’and proline content decreased at all concentrations of the Mn.
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